2026/01/01 by João P. B. de Souza, Juliano A. Bonacin, Juliano Alves Bonacin
Engineering · Energy · Materials Science · #Catalysis for Biomass Conversion #Electrocatalysts for Energy Conversion #Supercapacitor Materials and Fabrication
paper · doi:10.21577/0103-5053.20260101
Palladium (Pd) and nickel (Ni) catalysts obtained from cyanogel were applied for the first time to glycerol electrooxidation. Room temperature reduction of a cyanogel lead to a catalyst with a bimetallic crystal lattice, referred to as Pd2Ni1. Structural analysis confirmed the incorporation of nickel atoms into the face-centered cubic lattice, and surface characterization revealed electronic interactions that increased the catalytic activity. Electrochemical measurements demonstrated that Pd2Ni1 exhibited a negative shift of 30 mV in the Pd0 /PdII redox potential and a higher current density of 27.6 mA cm-2 than monometallic Pd and a Pd:Ni mixture with segregated lattices, which showed only a 20 mV negative shift and 2.16 mA cm-2 current density. The improved performance is attributed to the electronic effects and enhanced active-site accessibility based on voltammograms. These results highlight the potential of cyanogel-derived bimetallic catalysts for biomass valorization and sustainable energy conversion.